Which best proves why the expressions 4(x+3)+2x and 8(x+2) must be equivalent expressions? O When x-3, both expressions have a value of 30
O When Y-5, both expressions have a value of 12
O When x-1, both expressions have a value of 18, and when 8, both expressions have a value of 60.
O When x- 2. both expressions have a value of 15, and when x-8, both expressions have a value of 33
Mark this and

When x = 3, both expressions have a value of 30.

Step-by-step explanation:

The first expression is 4(x+3)+2x

The second expression is 6(x+2).

When we substitute x=3 into the first equation, we get:

When we substitute x=3 into the second expression we get:

This proves that the two expressions are equivalent.

The correct choice is A

this doesn't make sense lol

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204